A kind of durable rubber asphalt and preparation method thereof

Abstract

The invention relates to durable rubber asphalt. The asphalt is composed of the following components in parts by weight: 100 parts of matrix asphalt, 20-30 parts of rubber powder, 0.3-0.5 part of a foaming agent, 0.2-0.5 part of a foam stabilizer, 0.05-0.1 part of a stabilizer, 0.1-0.2 part of a defoaming agent, 10-20 parts of gamma-aminopropyl triethoxysilan and 10-20 parts of a rare earth tungstate. According to the method provided by the invention, the gamma-aminopropyl triethoxysilane is added, internal components of the asphalt are tightly combined through a coupling effect of the gamma-aminopropyl triethoxysilane, so that the viscosity and compactness of the asphalt are increased; the foaming agent is firstly added in the preparation process to make modified asphalt foamed, the internal structure of the asphalt becomes a honeycomb type, the rubber powder, water-based tackifying resin and the rare earth tungstate are bonded in the asphalt, so that the structure is more stereoscopic and the internal connection is more uniform and dense; the formed structure is processed by the defoaming agent, and the formed connection structure is pressed, so that the structure is more dense;after the rare earth tungstate is wrapped, the wear resistance of the asphalt is greatly increased; and the stabilizer is added during addition of the defoaming agent, so that a current structure is prevented from being destroyed.

Description

technical field [0001] The invention relates to the field of asphalt preparation, in particular to a durable rubber asphalt and a preparation method thereof. Background technique [0002] Asphalt pavement is widely used in road construction in my country because of its smooth surface, no joints, small vibration, low noise, smooth and comfortable driving, and easy maintenance and repair. However, the high-temperature stability and low-temperature crack resistance of asphalt pavement , water damage resistance and other deficiencies, it is easy to cause problems such as rutting, cracks and pits. At present, the performance of asphalt is mainly improved by adding modifiers. Although the durability of asphalt has been solved to a certain extent, the repeated rolling, There are still large durability problems in the process of alternating cold and hot. Contents of the invention [0003] The object of the present invention is to provide a durable rubber asphalt and a preparation m...

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Problems solved by technology

[0002] Asphalt pavement is widely used in road construction in my country because of its smooth surface, no joints, small vibration, low noise, smooth and comfortable driving, and easy maintenance and repair. However, the high-temperature stability and low-temperature crack resistance of asphalt pavement , water damage resistance and other deficiencies, it is easy to cause problems such as rutting, cracks and pits. At present, the performance of asphalt is mainly improved by adding modifiers. Although the durability of asphalt has been solved to a certain extent, the repeated rolling, There is still a big durability problem in the process of alternating cold and hot

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